Vector.h

///
/// A 2d (x,y) vector
///
 
#ifndef __VECTOR_H__
#define __VECTOR_H__
 
#include <string>
 
namespace df {
 
class Vector {
 
 private:
  float m_x;                    ///< Horizontal component.
  float m_y;                    ///< Vertical component.
 
 public:
 
  /// Create Vector with (x,y).  
  Vector(float init_x, float init_y);
 
  /// Default is (0,0).
  Vector();
 
  float getX() const;               ///< Get horizontal component.
  void setX(float new_x);           ///< Set horizontal component.
  float getY()const;                ///< Get vertical component.
  void setY(float new_y);           ///< Set vertical component.
  void setXY(float new_x, float new_y); ///< Set horizizontal & vertical.
  void normalize();                     ///< Normalize vector.
  void scale(float s);          ///< Scale vector.
  float getMagnitude() const;   ///< Return magnitude.
  bool operator==(const Vector &other) const;  ///< Compare Vector.
  bool operator!=(const Vector &other) const;  ///< Compare Vector.
  Vector &operator+=(const Vector &other); ///< Add other Vector to this one.
  Vector operator+(const Vector &other) const; ///< Add Vector.
  Vector operator-(const Vector &other) const; ///< Subtract Vector.
  bool operator!() const;                      ///< Test if (0,0).
  std::string toString() const; ///< Return attributes as string.
 
  /// Serialize attributes to stream.
  /// Return 0 if ok, else -1.
  int serialize(std::stringstream *p_ss) const;
 
  /// Deserialize attributes from stream.
  /// Return 0 if ok, else -1.
  int deserialize(std::stringstream *p_ss);
};
 
} // end of namespace df
#endif //__VECTOR_H__